legally. the only example where a background check might have changed things is in tucson, but we don't even know. it's a counterfactual if you couldn't have bought a gun legally, he would have found it some other way. >> first, even now, we've got limited checks. there's all these loopholes. department of justice says 1.9 million applications to buy guns were rejected. people were convicted of felonies, had been indicted for crimes. how can you argue blocking won't help? that's a whole lot of people that won't die. >> i don't know if those numbers are right. either way, it's irrelevant. if you want to look at the three most recent high profile cases, i think it's clear that at least two-thirds of the examples, it wouldn't have mattered. now, the real story here, places like chicago, i'm not convinced this would matter at all.